Aster eventually returns, by the time he does Bessie is flailing trying to get the valve out of her mouth, but a smack on the back of the head from Aster makes her stop her thrashing. He holds out a vial to you. "Try this. I'm not as good as Bessie with alchemy, but I've had years to figure out a few things, and I checked her notes. It won't fix everything, but it should get you off the milker. Then we can try some more stuff later, see if we can tweak things."
You turn the potion over as you look at it, considering. Not like you have much to loose. You pop the cork and raise it towards Aster. "Cheers." And gulp it down. The machine almost immediately stalls out, not being able to pull a constant stream of man milk out of your udder or cock anymore, a few last dribbles passing down the hose, you udder actually reducing in size from the milking instead of being completely full. With a gasp you pull off the attachments and throw them aside, grabbing your udder as you wince in pain.
The udder seems to be shrinking in your hands though.. or maybe your hands are getting bigger, or it could be a little of both. When you let it go, it no longer sags down to your knees. It still bulges out from beneath your cock, but stays a bit perkier, not hindering your movement as much. It is smaller. But your cock is bigger, and still growing.
Suddenly you can't keep your balance anymore and fall backwards. Luckily, Aster catches you under the arms. Your feet scrabble at the floor but you can't seem to get them to work right.
"Toes.. try standing on your toes." Aster says.
When you do, you suddenly find stability and manage to stand up, the looking down you see what the problem was. Your feet have become a pair of hooves. You look down at them then to Aster.
"Sorry, there was no way to get you back to completely human, so I went the other way." Aster glares at Bessie, obviously considering this her fault.
"I.. guess you did what you could.." Brown fur stars growing out of your lower legs, creeping up past your knees and up your thighs, thighs that seem to be growing, muscle being added on, your legs stretching as a whole as inches are added to your height. There's a momentary pain in your backside, and you reach around to find a tail, long and ropy, has sprouted from your backside.
The growth of fur peters out at your waist, engulfing the part of your crotch not occupied by cock or udder. The muscle growth from your legs continues however, your already slightly swollen pecs fill out even more as your stomach hardens into a six-pack. Your shoulders and chest barrel outwards. If there was any worry about losing your masculinity, it's gone. You look up, and with a shock realize you're looking Aster right in the eyes, his bovine mouth twisted into something approximating a smile, one ear flicking.
Hair spreads out along your chest and down your stomach to meet the line of fur. Like Aster, your torso seems to be staying human, though a hairy, muscle bear of a human. Muscle swells in your arms, pushing them past the size of your old legs. You're not quite as.. beefy as Aster, but the muscle you're putting on display is no joke.
"Brace yourself. This will be the worst part." Aster puts a hand on your shoulder.
You're about to ask what he means when pressure suddenly builds in your head. A blob forms in the middle of your vision.. no.. that's a muzzle. Your muzzle. You reach up, and instead of a human nose and mouth, you're met with bovine features, flared nostrils and thick lips, a fine layer of fur covering most of your muzzle and now covering your face. It feels like someone is yanking on the little nubs of horn you grew earlier, trying to tug them out of your skull, grabbing at them, you can feel them growing under your fingers, until each one is a foot long, curving slightly upwards.
Your cock, like Aster's, still looks human, other than being immensely huge, at least until it starts to disappear behind your udder. You panic for a moment, grabbing it and find a sheath behind your udder, just hidden except for the last inch or so near the opening. You check Aster's, but his cock is out of it's sheath and standing at full attention as he looks at you. He shrugs. "Sorry.. but you're kind of.." He coughs and looks away.
As far as you can tell, you are now fully a male minotaur. Well, except for the udder that hangs from your middle. You give a little tug on one of the teats, and something white comes shooting out. You wet your finger with another stream and taste it. Warm.. creamy.. it's just milk as far as you can tell. Before you can tell him no, Aster takes one of your teats and squirts it into his mouth. "Good, I did get that back to normal. You'll need to milk it occasionally, but you won't be stuck on the milker. These, too, sorry." He reaches up to one of your still slightly puffy nipples on your chest, a squeeze produces another stream of milk. At least you don't have breasts, but it does explain why when you're slightly leaner in most muscles from Aster, your pecs seem a bit larger. "I'll keep trying to figure out how to.. stop that."
Aster pulls you into a hug, and strangely, you feel yourself wrapping your arms around him. Afterall, you've just been through something awful together. Only the muffled laughing reminds you Bessie is still there.
"You got the worst of it, I'll let you pick how to deal with her." Aster says with a look to you.